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Tohutoro APA (7th ed.)
Goebel Edwin D., Asbury Sally, & Buie Margaret. (1957). The petroleum industry in Kansas. State Geological Survey.
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Tohutoru Kātū Chicago (17th ed.)
Goebel Edwin D., Asbury Sally, me Buie Margaret. The petroleum Industry in Kansas. State Geological Survey, 1957.
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Kua rahua te tārua ki te papatopenga
Tohutoro MLA (9th ed.)
Goebel Edwin D., et al. The petroleum Industry in Kansas. State Geological Survey, 1957.
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Kua rahua te tārua ki te papatopenga
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